CA2000156C - Dispositif de codage et de decodage de signaux d'imagerie - Google Patents

Dispositif de codage et de decodage de signaux d'imagerie

Info

Publication number
CA2000156C
CA2000156C CA002000156A CA2000156A CA2000156C CA 2000156 C CA2000156 C CA 2000156C CA 002000156 A CA002000156 A CA 002000156A CA 2000156 A CA2000156 A CA 2000156A CA 2000156 C CA2000156 C CA 2000156C
Authority
CA
Canada
Prior art keywords
signal
section
series
picture signal
variable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CA002000156A
Other languages
English (en)
Other versions
CA2000156A1 (fr
Inventor
Kohtaro Asai
Tokumichi Murakami
Kazuhiro Matsuzaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP1034344A external-priority patent/JPH0828872B2/ja
Priority claimed from JP1034345A external-priority patent/JPH02214282A/ja
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of CA2000156A1 publication Critical patent/CA2000156A1/fr
Application granted granted Critical
Publication of CA2000156C publication Critical patent/CA2000156C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44004—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video buffer management, e.g. video decoder buffer or video display buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • H04N19/139—Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/152—Data rate or code amount at the encoder output by measuring the fullness of the transmission buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/18—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a set of transform coefficients
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/23406—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving management of server-side video buffer

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
CA002000156A 1989-02-14 1989-10-04 Dispositif de codage et de decodage de signaux d'imagerie Expired - Lifetime CA2000156C (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1034344A JPH0828872B2 (ja) 1989-02-14 1989-02-14 画像の符号化伝送装置
JP1034345A JPH02214282A (ja) 1989-02-14 1989-02-14 変換符号化装置
JP34344/89 1989-02-14
JP34345/89 1989-02-14

Publications (2)

Publication Number Publication Date
CA2000156A1 CA2000156A1 (fr) 1990-08-14
CA2000156C true CA2000156C (fr) 1995-05-02

Family

ID=26373138

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002000156A Expired - Lifetime CA2000156C (fr) 1989-02-14 1989-10-04 Dispositif de codage et de decodage de signaux d'imagerie

Country Status (5)

Country Link
US (2) US4954892A (fr)
EP (2) EP0534504B1 (fr)
KR (1) KR920009185B1 (fr)
CA (1) CA2000156C (fr)
DE (2) DE68913508T2 (fr)

Families Citing this family (96)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5121202A (en) * 1989-05-12 1992-06-09 Nec Corporation Adaptive interframe prediction coded video communications system
US5247357A (en) * 1989-05-31 1993-09-21 Scientific Atlanta, Inc. Image compression method and apparatus employing distortion adaptive tree search vector quantization with avoidance of transmission of redundant image data
JPH03129987A (ja) * 1989-10-14 1991-06-03 Sony Corp 映像信号符号化装置及び映像信号符号化方法
JP3093233B2 (ja) * 1990-03-16 2000-10-03 キヤノン株式会社 画像符号化装置及びその方法
US5134476A (en) * 1990-03-30 1992-07-28 At&T Bell Laboratories Video signal encoding with bit rate control
JP2723660B2 (ja) * 1990-08-06 1998-03-09 松下電器産業株式会社 直交変換装置
JP2839943B2 (ja) * 1990-08-10 1998-12-24 富士通株式会社 画像データ復元方法及び装置
US5636316A (en) * 1990-12-05 1997-06-03 Hitachi, Ltd. Picture signal digital processing unit
US5285276A (en) * 1991-03-12 1994-02-08 Zenith Electronics Corp. Bi-rate high definition television signal transmission system
WO1992017032A1 (fr) * 1991-03-12 1992-10-01 Zenith Electronics Corporation Systeme d'emission de signal de television avec deux jeux de symboles de canaux
JPH0541862A (ja) * 1991-08-03 1993-02-19 Sony Corp 動きベクトルの可変長符号化方式
US5428396A (en) * 1991-08-03 1995-06-27 Sony Corporation Variable length coding/decoding method for motion vectors
US5418617A (en) * 1991-08-08 1995-05-23 Matsushita Electric Corporation Of America Motion compensation using minimum bits per motion block as criterion for block matching
US5251028A (en) * 1991-08-08 1993-10-05 Matsushita Electric Corporation Of America Apparatus for reducing quantization artifacts in an interframe hybrid coding system with motion compensation
US6487362B1 (en) 1991-08-19 2002-11-26 Index Systems, Inc. Enhancing operations of video tape cassette players
US6091884A (en) * 1991-08-19 2000-07-18 Index Systems, Inc. Enhancing operations of video tape cassette players
US5144424A (en) * 1991-10-15 1992-09-01 Thomson Consumer Electronics, Inc. Apparatus for video data quantization control
US5351083A (en) * 1991-10-17 1994-09-27 Sony Corporation Picture encoding and/or decoding system
JPH05115010A (ja) * 1991-10-22 1993-05-07 Canon Inc 画像復号化装置
JPH05137131A (ja) * 1991-11-13 1993-06-01 Sony Corp フレーム間動き予測方法
SE9103381L (sv) * 1991-11-15 1993-03-08 Televerket Foerfarande och apparat foer bildkodning med val av steghoejd i kvantiseraren
US5231485A (en) * 1991-11-19 1993-07-27 Scientific-Atlanta, Inc. Method and apparatus for transforming between fixed-rate vector quantized data and variable rate vector quantized data
US5255090A (en) * 1991-11-19 1993-10-19 Scientific-Atlanta, Inc. Progressive transmission of vector quantized data
US5172228A (en) * 1991-11-19 1992-12-15 Utah State University Foundation Image compression method and apparatus employing distortion adaptive tree search vector quantization
US5734784A (en) * 1992-03-25 1998-03-31 Kabushiki Kaisha Toshiba High data rate system and method for video recording and playback
GB2266023B (en) * 1992-03-31 1995-09-06 Sony Broadcast & Communication Motion dependent video signal processing
EP0574901A2 (fr) * 1992-06-16 1993-12-22 Kabushiki Kaisha Toshiba Processeur de signaux d'image
KR0134166B1 (ko) * 1992-11-24 1998-04-22 모리시타 요이찌 영상신호기록장치
US5768424A (en) * 1993-01-15 1998-06-16 Canon, Inc. Compression factor adjustment to facilitate image display
US5426463A (en) * 1993-02-22 1995-06-20 Rca Thomson Licensing Corporation Apparatus for controlling quantizing in a video signal compressor
EP0618733B1 (fr) * 1993-03-29 2000-05-24 Canon Kabushiki Kaisha Méthode de contrôle de la quantité de données et codeur la mettant en oeuvre
US5361097A (en) * 1993-04-02 1994-11-01 Rca Thomson Licensing Corporation Priority processing of encoded video signal including insertion of datastream null words during priority analysis intervals
US6067408A (en) * 1993-05-27 2000-05-23 Advanced Micro Devices, Inc. Full duplex buffer management and apparatus
WO1995002947A1 (fr) 1993-07-12 1995-01-26 Sony Corporation Procede et dispositif de reproduction du signal image
US5452009A (en) * 1993-12-29 1995-09-19 Zenith Electronics Corp. Digital transmission system with data rate optimized for noise in transmission medium
JP3082585B2 (ja) * 1994-09-09 2000-08-28 富士ゼロックス株式会社 画像情報符号化処理装置、画像情報復号化処理装置及び画像情報符号化復号化処理装置
US5677969A (en) * 1995-02-23 1997-10-14 Motorola, Inc. Method, rate controller, and system for preventing overflow and underflow of a decoder buffer in a video compression system
KR0171118B1 (ko) * 1995-03-20 1999-03-20 배순훈 비디오신호 부호화 장치
KR970023245A (ko) * 1995-10-09 1997-05-30 이데이 노부유끼 음성복호화방법 및 장치
US5987181A (en) * 1995-10-12 1999-11-16 Sharp Kabushiki Kaisha Coding and decoding apparatus which transmits and receives tool information for constructing decoding scheme
US5956088A (en) * 1995-11-21 1999-09-21 Imedia Corporation Method and apparatus for modifying encoded digital video for improved channel utilization
US5877812A (en) * 1995-11-21 1999-03-02 Imedia Corporation Method and apparatus for increasing channel utilization for digital video transmission
US5862140A (en) * 1995-11-21 1999-01-19 Imedia Corporation Method and apparatus for multiplexing video programs for improved channel utilization
US5731837A (en) * 1996-01-25 1998-03-24 Thomson Multimedia, S.A. Quantization circuitry as for video signal compression systems
FR2753330B1 (fr) * 1996-09-06 1998-11-27 Thomson Multimedia Sa Procede de quantification pour codage video
DE19737835C2 (de) * 1997-08-29 1999-07-15 Siemens Ag Verfahren zum Komprimieren von Bildinformationen
US6389072B1 (en) * 1998-12-23 2002-05-14 U.S. Philips Corp. Motion analysis based buffer regulation scheme
US6738423B1 (en) * 2000-01-21 2004-05-18 Nokia Mobile Phones Ltd. Method for encoding and decoding video information, a motion compensated video encoder and a corresponding decoder
US7062445B2 (en) * 2001-01-26 2006-06-13 Microsoft Corporation Quantization loop with heuristic approach
US7646816B2 (en) * 2001-09-19 2010-01-12 Microsoft Corporation Generalized reference decoder for image or video processing
US7027982B2 (en) * 2001-12-14 2006-04-11 Microsoft Corporation Quality and rate control strategy for digital audio
US6944566B2 (en) * 2002-03-26 2005-09-13 Lockheed Martin Corporation Method and system for multi-sensor data fusion using a modified dempster-shafer theory
JP3925311B2 (ja) * 2002-06-03 2007-06-06 ソニー株式会社 データ配信システム
US6980695B2 (en) * 2002-06-28 2005-12-27 Microsoft Corporation Rate allocation for mixed content video
US7380028B2 (en) * 2003-06-13 2008-05-27 Microsoft Corporation Robust delivery of video data
US7383180B2 (en) * 2003-07-18 2008-06-03 Microsoft Corporation Constant bitrate media encoding techniques
US7343291B2 (en) 2003-07-18 2008-03-11 Microsoft Corporation Multi-pass variable bitrate media encoding
US7609763B2 (en) 2003-07-18 2009-10-27 Microsoft Corporation Advanced bi-directional predictive coding of video frames
US8107531B2 (en) * 2003-09-07 2012-01-31 Microsoft Corporation Signaling and repeat padding for skip frames
US7961786B2 (en) * 2003-09-07 2011-06-14 Microsoft Corporation Signaling field type information
US8345754B2 (en) * 2003-09-07 2013-01-01 Microsoft Corporation Signaling buffer fullness
US7724827B2 (en) * 2003-09-07 2010-05-25 Microsoft Corporation Multi-layer run level encoding and decoding
US8582659B2 (en) 2003-09-07 2013-11-12 Microsoft Corporation Determining a decoding time stamp from buffer fullness
EP1538844A3 (fr) * 2003-11-26 2006-05-31 Samsung Electronics Co., Ltd. Procédé pour la transformation et le codage d'une image couleur résiduelle
KR20060042295A (ko) * 2004-11-09 2006-05-12 삼성전자주식회사 화상 데이터 부호화 및 복호화 방법 및 장치
KR100647294B1 (ko) * 2004-11-09 2006-11-23 삼성전자주식회사 화상 데이터 부호화 및 복호화 방법 및 장치
US20060104356A1 (en) * 2004-11-15 2006-05-18 Microsoft Corporation Timing for decoder buffer examination
US8254455B2 (en) 2007-06-30 2012-08-28 Microsoft Corporation Computing collocated macroblock information for direct mode macroblocks
US8325800B2 (en) 2008-05-07 2012-12-04 Microsoft Corporation Encoding streaming media as a high bit rate layer, a low bit rate layer, and one or more intermediate bit rate layers
US8379851B2 (en) 2008-05-12 2013-02-19 Microsoft Corporation Optimized client side rate control and indexed file layout for streaming media
US7860996B2 (en) 2008-05-30 2010-12-28 Microsoft Corporation Media streaming with seamless ad insertion
US8265140B2 (en) 2008-09-30 2012-09-11 Microsoft Corporation Fine-grained client-side control of scalable media delivery
US8189666B2 (en) * 2009-02-02 2012-05-29 Microsoft Corporation Local picture identifier and computation of co-located information
US8395985B2 (en) 2011-07-25 2013-03-12 Ofinno Technologies, Llc Time alignment in multicarrier OFDM network
US8964683B2 (en) 2012-04-20 2015-02-24 Ofinno Technologies, Llc Sounding signal in a multicarrier wireless device
US9237537B2 (en) 2012-01-25 2016-01-12 Ofinno Technologies, Llc Random access process in a multicarrier base station and wireless device
US8964780B2 (en) 2012-01-25 2015-02-24 Ofinno Technologies, Llc Sounding in multicarrier wireless communications
EP3937551A3 (fr) 2012-01-25 2022-02-09 Comcast Cable Communications, LLC Canal d'accès aléatoire dans des communications sans fil à porteuses multiples avec des groupes d'avance temporelle
US11943813B2 (en) 2012-04-01 2024-03-26 Comcast Cable Communications, Llc Cell grouping for wireless communications
US20130259008A1 (en) 2012-04-01 2013-10-03 Esmael Hejazi Dinan Random Access Response Process in a Wireless Communications
WO2013151651A1 (fr) 2012-04-01 2013-10-10 Dinan Esmael Hejazi Configuration de groupe de cellules dans un dispositif sans fil et station de base à groupes d'avance temporelle
US11252679B2 (en) 2012-04-16 2022-02-15 Comcast Cable Communications, Llc Signal transmission power adjustment in a wireless device
US11825419B2 (en) * 2012-04-16 2023-11-21 Comcast Cable Communications, Llc Cell timing in a wireless device and base station
US9210664B2 (en) 2012-04-17 2015-12-08 Ofinno Technologies. LLC Preamble transmission in a wireless device
US8964593B2 (en) 2012-04-16 2015-02-24 Ofinno Technologies, Llc Wireless device transmission power
US11582704B2 (en) 2012-04-16 2023-02-14 Comcast Cable Communications, Llc Signal transmission power adjustment in a wireless device
EP3337079B1 (fr) 2012-04-16 2024-06-05 Comcast Cable Communications, LLC Configuration avec groupes de cellules pour l'émission en liaison montante dans un dispositif sans fil multi-porteuses et station de base avec groupes d'avance de synchronisation
US9179425B2 (en) 2012-04-17 2015-11-03 Ofinno Technologies, Llc Transmit power control in multicarrier communications
US9113387B2 (en) 2012-06-20 2015-08-18 Ofinno Technologies, Llc Handover signalling in wireless networks
US9084228B2 (en) 2012-06-20 2015-07-14 Ofinno Technologies, Llc Automobile communication device
US8971298B2 (en) 2012-06-18 2015-03-03 Ofinno Technologies, Llc Wireless device connection to an application server
US9210619B2 (en) 2012-06-20 2015-12-08 Ofinno Technologies, Llc Signalling mechanisms for wireless device handover
US9179457B2 (en) 2012-06-20 2015-11-03 Ofinno Technologies, Llc Carrier configuration in wireless networks
US11882560B2 (en) 2012-06-18 2024-01-23 Comcast Cable Communications, Llc Carrier grouping in multicarrier wireless networks
US11622372B2 (en) 2012-06-18 2023-04-04 Comcast Cable Communications, Llc Communication device
US9107206B2 (en) 2012-06-18 2015-08-11 Ofinne Technologies, LLC Carrier grouping in multicarrier wireless networks

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5851471B2 (ja) * 1975-04-09 1983-11-16 日本電気株式会社 テレビシンゴウフゴウカソウチ
JPS5248423A (en) * 1975-10-16 1977-04-18 Kokusai Denshin Denwa Co Ltd <Kdd> Transmission system of facsimile signal
JPS5514704A (en) * 1978-07-18 1980-02-01 Ricoh Co Ltd Data compression system
US4386373A (en) * 1980-07-18 1983-05-31 Ricoh Company, Ltd. Facsimile apparatus
JPS5992688A (ja) * 1982-11-19 1984-05-28 Fuji Photo Film Co Ltd 適応形画像圧縮方式
JPS59201578A (ja) * 1983-04-28 1984-11-15 Ricoh Co Ltd ファクシミリの伝送制御方式
JPS61107818A (ja) * 1984-10-30 1986-05-26 Nec Corp エントロピ−符号化方式とその装置
US4723161A (en) * 1985-03-20 1988-02-02 Nec Corporation Method and arrangement of coding digital image signals utilizing interframe correlation
JPS62222783A (ja) * 1986-03-24 1987-09-30 Kokusai Denshin Denwa Co Ltd <Kdd> 動画像の高能率符号化方式
JPS62230281A (ja) * 1986-03-31 1987-10-08 Toshiba Corp 画像伝送方式
EP0260721B1 (fr) * 1986-09-25 1993-12-01 Nec Corporation Procédé et appareil de codage des signaux d'images à mouvements
EP0262460A3 (fr) * 1986-09-30 1989-10-25 Siemens Aktiengesellschaft Dispositif d'attribution optimale de poids à des coefficients de transformation transmis auprès de codeurs par transformation dans le but de minimaliser les distorsions de repliement
US4851906A (en) * 1986-11-04 1989-07-25 Nec Corporation Data compression using orthogonal transform and vector quantization
US5028995A (en) * 1987-10-28 1991-07-02 Hitachi, Ltd. Picture signal processor, picture signal coder and picture signal interpolator
US4951140A (en) * 1988-02-22 1990-08-21 Kabushiki Kaisha Toshiba Image encoding apparatus
US4972260A (en) * 1988-08-22 1990-11-20 Matsushita Electric Industrial Co., Ltd. Apparatus for coding a moving-picture signal

Also Published As

Publication number Publication date
DE68927960T2 (de) 1997-07-17
EP0534504A3 (en) 1993-06-09
DE68913508T2 (de) 1994-06-09
EP0534504B1 (fr) 1997-04-09
EP0382892A1 (fr) 1990-08-22
DE68913508D1 (de) 1994-04-07
EP0534504A2 (fr) 1993-03-31
CA2000156A1 (fr) 1990-08-14
DE68927960D1 (de) 1997-05-15
KR920009185B1 (ko) 1992-10-14
US4954892A (en) 1990-09-04
KR900013790A (ko) 1990-09-06
HK1008133A1 (en) 1999-04-30
US5111294A (en) 1992-05-05
EP0382892B1 (fr) 1994-03-02

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